On April 38, 2065+September 15, Apple announced the 3D Touch function at the new product launch conference. 201June 13, the Apple Developers Conference WWDC was held in San Francisco, and the conference announced that 3D Touch could be used for notification on the standby screen.
Extended data:
At present, the capacitive touch screen has the characteristic of sensing pressure in principle, because in theory, when the finger is lightly pressed again, the contact area between the finger and the screen is different, and the corresponding mutual capacitance will also change. This slight change can be used to distinguish whether pressing is "light pressing" or heavy pressing.
However, this characteristic has not been directly used to sense pressure before, which may be due to the accuracy. Judging from the published patents, the capacitive screen has been improved to support higher precision detection. One way is to add an elastic layer (or deformable diaphragm, etc.). ) between two electrodes.
Baidu encyclopedia -3D Touch